Error importing "pyqt4" and "gtk" backend

[DeqiangXiao]

Hi Aaron, I executed "run.sh" on our linux server, the following errors display:

Error importing pyqt4 backend: cannot import name QtOpenGL /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/init.py:127: RuntimeWarning: PyOS_InputHook is not available for interactive use of PyGTK set_interactive(1) Error importing gtk backend: No module named gtkgl Traceback (most recent call last): File "../vis.py", line 24, in t = vv.imshow(im) File "/usr/local/lib/python2.7/dist-packages/visvis/functions/imshow.py", line 57, in imshow axes = vv.gca() File "/usr/local/lib/python2.7/dist-packages/visvis/functions/gca.py", line 19, in gca f = vv.gcf() File "/usr/local/lib/python2.7/dist-packages/visvis/functions/gcf.py", line 23, in gcf return vv.figure() File "/usr/local/lib/python2.7/dist-packages/visvis/functions/figure.py", line 23, in figure backends.use() File "/usr/local/lib/python2.7/dist-packages/visvis/backends/init.py", line 229, in use raise RuntimeError("None of the backends could be loaded. "+tmp) RuntimeError: None of the backends could be loaded. Install PySide, PyQt4, wxPython, GTK, or fltk.

I checked this error on google, but still cannot understand what it is caused by. Do you have any idea about it? Thanks in advance!

[AaronJackson]

Do as it says - install PyQt4. However, as you are connecting via a server there may not be any way to display it to you, and X11 forwarding may result in OpenGL issues.

[DeqiangXiao]

Hi Aaron, I finally got through the code testing on our server after installing PyQt4, the results cannot be shown in the server as you pointed, while I can download the results on own pc and figured this issue out. Thank you very much!

[AaronJackson]

Glad you found a way to make it work.

Enjoy!